Top Pick — discover the AstroAI S8 Ultra 4000A Jump Starter, 24000mAh Car Starter(All Gas, Up to 12L Diesel Engine), 12V Auto Battery Booster Pack, Jump Box with USB Quick Charge and DC/Type C Port,… by AstroAI, built for performance and designed for life in the United States.
The AstroAI S8 Ultra 4000A Jump Starter, 24000mAh Car Starter(All Gas, Up to 12L Diesel Engine), 12V Auto Battery Booster Pack, Jump Box with USB Quick Charge and DC/Type C Port,… by AstroAI combines reliability, modern design, and user-focused engineering. Perfect for everyday use, it delivers dependable results for American customers who value innovation.
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Original price was: $139.99.$79.99Current price is: $79.99.
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HotzyDeals Editorial Team
Bryan Chesnut –
Honestly have not had a chance to use. The quality of the jumpstart seems to be good quality and well made. Like that the charger is a universal usb cable that comes with the jump starter and can use just about any generic usb charger. Would be nice if came with clam shell case, but if the jump starter works well when needed not that big of a deal. Does come with bag for storage. Quick delivery A+. Gave 4 stars as have not had chance to use.
heissel sanchez –
This jump starter really impressed me with its power. It started my car in just a few seconds, even with a completely dead battery. It’s compact, easy to store in the car, and the built-in flashlight is very useful for emergencies at night. I’ve also used it to charge my phone and other devices with the USB ports.
Highly recommend it—an essential tool to always keep in your vehicle for peace of mind.
imn2elk –
Feels and looks like a quality product. Charged stupendous used it on my son’s diesel truck and it worked excellent.
جميل جدا 🤍🍃 –
ما شاء الله.. والله الجهاز مره شكرا 🍃
في الشكل والقوة والأداء 👌🏽
Amazon Customer –
Great jumper. Used it today
Nickolas –
I picked up the AstroAI S8 Ultra 4000A Jump Starter as a backup for my vehicle, and after a few weeks of testing it out, here’s what stood out:
Performance:
• This thing has serious muscle. I helped a stranded motorist with 5.3L V8 truck battery that was completely dead, and it didn’t hesitate. On paper, it’s rated for all gas engines and up to 12L diesel—and based on the kick it gave my truck, I believe it.
• The jumper cables feel sturdy, with good clamping force and no noticeable heat build-up even after multiple test jumps.
Design & Build:
• Compact enough to store in a glove box or center console. It doesn’t feel cheap like big box stores jump packs, and the rubberized edges give some drop protection.
• The LED light is bright enough for roadside use—think emergency hazard light or just finding your way under the hood at night.
Battery & Ports:
• The 24,000mAh capacity isn’t just for jump starts. I used it to recharge my phone, tablet, and even a laptop via the USB-C port. It supports fast charging, which is a plus if you’re out camping or on the road.
• Having a DC output is handy if you need to power 12V accessories.
Ease of Use:
• Straightforward—plug in the jumper cables, connect, and press. The safety system warns you of incorrect polarity, which is a big deal for people who aren’t mechanically inclined.
What I Liked Most:
• Strong jump-starting ability (even on bigger engines).
• Multi-use battery pack—basically a power bank + jump starter in one.
• Solid build, portable size.
What Could Be Better:
• The carrying bag is functional but hard case would be better
• The instruction manual is basic. A more detailed guide or QR link to a video would help first-time users.
Add-on to consider for this is a 60w folding solar panel so you will never run out power
TDLR:
If you want peace of mind on the road, the AstroAI S8 Ultra is a smart buy. It’s not just a jump starter—it doubles as a reliable travel power bank. For the price, the features and raw power make it an excellent value.
Steve K –
I’ve had this in my truck for a year, never charged it after the initial charge. Helped a guy with a dead battery, worked perfectly!!
Susan Bearpark –
Received prompt, well packaged and looks good. Have charged it fully as instructed. I have yet to actually use the machine
William Maloney –
I tried the S8 first and it worked very well but the battery was drained a lot from just a few jump starts. This S8 Ultra, on the other hand will jump start a typical car 20+ times on a charge with a very dead battery. Everything about it works very well and the battery clamps are better quality than the regular s8 as well. I wish it had the slide open door for the jumper cable connection like the s8 rather than the rubber cover, but otherwise it’s great!
Leslie Cameron –
Works as advertised! I already own a full size heavy duty jump starter for my truck and vehicles. I bought this for smaller batteries ie, four wheelers, tractors etc…because of the smaller battery clamps.
What I really love about this is it recognizes all battery types and adjusts to them just by pushing a button. For a small size, it packs a punch of cold cranking amps and is perfect for super cold winters. Love the carrying pouch too!